From patchwork Mon Oct 18 06:54:13 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Faiyaz Mohammed X-Patchwork-Id: 12565203 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id E4DA7C433EF for ; Mon, 18 Oct 2021 06:54:50 +0000 (UTC) Received: from kanga.kvack.org (kanga.kvack.org [205.233.56.17]) by mail.kernel.org (Postfix) with ESMTP id 7D7F5610A6 for ; Mon, 18 Oct 2021 06:54:50 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.4.1 mail.kernel.org 7D7F5610A6 Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=codeaurora.org Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=kvack.org Received: by kanga.kvack.org (Postfix) id 15BE96B006C; Mon, 18 Oct 2021 02:54:50 -0400 (EDT) Received: by kanga.kvack.org (Postfix, from userid 40) id 10BB36B0071; Mon, 18 Oct 2021 02:54:50 -0400 (EDT) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id F3C7C900002; Mon, 18 Oct 2021 02:54:49 -0400 (EDT) X-Delivered-To: linux-mm@kvack.org Received: from forelay.hostedemail.com (smtprelay0009.hostedemail.com [216.40.44.9]) by kanga.kvack.org (Postfix) with ESMTP id E3D706B006C for ; Mon, 18 Oct 2021 02:54:49 -0400 (EDT) Received: from smtpin27.hostedemail.com (10.5.19.251.rfc1918.com [10.5.19.251]) by forelay03.hostedemail.com (Postfix) with ESMTP id 9F15D8249980 for ; Mon, 18 Oct 2021 06:54:49 +0000 (UTC) X-FDA: 78708645498.27.B20FBA6 Received: from so254-9.mailgun.net (so254-9.mailgun.net [198.61.254.9]) by imf18.hostedemail.com (Postfix) with ESMTP id C5852400208A for ; Mon, 18 Oct 2021 06:54:44 +0000 (UTC) DKIM-Signature: a=rsa-sha256; v=1; c=relaxed/relaxed; d=mg.codeaurora.org; q=dns/txt; s=smtp; t=1634540089; h=Message-Id: Date: Subject: Cc: To: From: Sender; bh=kRLvLWSgDASbo/0146rVlR7sWyBcf7/zvf5aC/0dPE8=; b=lOV1QM3q1aNyHNt8gviuomABT8/L8N2NXAG96CnVGSLkhVTc7GshQDMwZCD7Y/2mZXeZQzLT N4YsilLGE1RGJzL3+sZzfRCMfmeYB1wIQddzlrbvvkXrHKu1mERizXfdllIULuvjgGi1rbNg mJEOHJJkZN5RquL6EJoh6mcBwck= X-Mailgun-Sending-Ip: 198.61.254.9 X-Mailgun-Sid: WyIwY2Q3OCIsICJsaW51eC1tbUBrdmFjay5vcmciLCAiYmU5ZTRhIl0= Received: from smtp.codeaurora.org (ec2-35-166-182-171.us-west-2.compute.amazonaws.com [35.166.182.171]) by smtp-out-n01.prod.us-east-1.postgun.com with SMTP id 616d1a21446c6db0cb1964c2 (version=TLS1.2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256); Mon, 18 Oct 2021 06:54:25 GMT Received: by smtp.codeaurora.org (Postfix, from userid 1001) id 896CCC43460; Mon, 18 Oct 2021 06:54:24 +0000 (UTC) Received: from faiyazm-linux.qualcomm.com (unknown [202.46.22.19]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-SHA256 (128/128 bits)) (No client certificate requested) (Authenticated sender: faiyazm) by smtp.codeaurora.org (Postfix) with ESMTPSA id C2D64C4338F; Mon, 18 Oct 2021 06:54:21 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.4.1 smtp.codeaurora.org C2D64C4338F From: Faiyaz Mohammed To: akpm@linux-foundation.org, linux-mm@kvack.org, linux-kernel@vger.kernel.org, david@redhat.com Cc: guptap@codeaurora.org, Faiyaz Mohammed Subject: [PATCH v4] mm: page_alloc: Add debug log in free_reserved_area for static memory Date: Mon, 18 Oct 2021 12:24:13 +0530 Message-Id: <1634540053-23304-1-git-send-email-faiyazm@codeaurora.org> X-Mailer: git-send-email 2.7.4 X-Rspamd-Queue-Id: C5852400208A Authentication-Results: imf18.hostedemail.com; dkim=pass header.d=mg.codeaurora.org header.s=smtp header.b=lOV1QM3q; spf=pass (imf18.hostedemail.com: domain of "bounce+d06763.be9e4a-linux-mm=kvack.org@mg.codeaurora.org" designates 198.61.254.9 as permitted sender) smtp.mailfrom="bounce+d06763.be9e4a-linux-mm=kvack.org@mg.codeaurora.org"; dmarc=none X-Stat-Signature: 65y7h3y5akwfaqb4j7n4dyifdtpkpxho X-Rspamd-Server: rspam05 X-HE-Tag: 1634540084-375478 X-Bogosity: Ham, tests=bogofilter, spamicity=0.000016, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: For INITRD and initmem memory is reserved through "memblock_reserve" during boot up but it is free via "free_reserved_area" instead of "memblock_free". For example: [ 0.294848] Freeing initrd memory: 12K. [ 0.696688] Freeing unused kernel memory: 4096K. To get the start and end address of the above freed memory and to account proper memblock added pr_debug log in "free_reserved_area". After adding log: [ 0.294837] 0x00000083600000-0x00000083603000 free_initrd_mem+0x20/0x28 [ 0.294848] Freeing initrd memory: 12K. [ 0.695246] 0x00000081600000-0x00000081a00000 free_initmem+0x70/0xc8 [ 0.696688] Freeing unused kernel memory: 4096K. Signed-off-by: Faiyaz Mohammed Reported-by: kernel test robot --- changes in v4: - Use correctly _RET_IP_ macro. changes in v3: - Update the format specifier. changes in v2: - To avoid confusion, remove the memblock_dbg print and drop the memblock_free string, now using pr_debug to print the address ranges. mm/page_alloc.c | 7 ++++++- 1 file changed, 6 insertions(+), 1 deletion(-) diff --git a/mm/page_alloc.c b/mm/page_alloc.c index b37435c..19ca193 100644 --- a/mm/page_alloc.c +++ b/mm/page_alloc.c @@ -8097,6 +8097,8 @@ EXPORT_SYMBOL(adjust_managed_page_count); unsigned long free_reserved_area(void *start, void *end, int poison, const char *s) { + const phys_addr_t pstart = __pa(start); + const phys_addr_t pend = __pa(end); void *pos; unsigned long pages = 0; @@ -8125,9 +8127,12 @@ unsigned long free_reserved_area(void *start, void *end, int poison, const char free_reserved_page(page); } - if (pages && s) + if (pages && s) { pr_info("Freeing %s memory: %ldK\n", s, pages << (PAGE_SHIFT - 10)); + pr_debug("[%pa-%pa] %pS\n", &pstart, &pend, + (void *)_RET_IP_); + } return pages; }